Gravitas HydroSnake Expanding Water Barrier 2 Pack
(6687D)

Highly effective flood prevention. Absorbs up to 20 litres of water or sewage and expands up to 40x its own weight. Versatile design will fit into openings and door wells. Contains eco-friendly, easy to dispose pulp and super absorbent polymer. Simply slit the sack and disperse the contents into the earth. Suitable for landfill and incineration.

Rated 3 out of
5 by
LloydofWales from
Not as effective as sandbagsThe right up on these make them sound an ideal alternative to sand bags, but they are not. They swell to about half the size of a sandbag and because they are light, the water flows underneath them. They would be ok for use indoors to absorb and maybe contain water from a slow leak but not much good for large volume spills or flood defence.